DB2 to HANA DB

Lists DB2 UDB-to-HANA DB datatype mappings.

See SAP HANA Reference > SQL Reference Manual > Data Types for current information on the range of values that can be represented by HANA DB datatypes.

DB2 UDB-to-HANA DB Datatype Mappings
DB2 UDB Datatype	Replication Definition Datatype	HANA Datatype
`BIGINT`	`rs_udb_bigint`	`bigint`
`BLOB`	`image`	`blob`
`CHAR`	`char`	`char` (See note below.)
`CHAR FOR BIT DATA`	`rs_udb_char_for_bit` (up to 255 bytes) `varbinary` (greater than 255 bytes)	`varbinary`
`CLOB`	`text`	`clob`
`DATE`	`rs_udb_date`	`date`
`DBCLOB`	`unitext`	`nclob`
`DECFLOAT(16)`	`rs_udb_decfloat`	`float`
`DECFLOAT(32)`	`rs_udb_decfloat`	`decimal`
`DECIMAL`	`decimal`	`decimal`
`DOUBLE`	`rs_udb_double`	`double`
`GRAPHIC`	`unichar`	`nchar`
`INTEGER`	`integer`	`integer`
`LONG VARCHAR`	`text`	`clob`
`LONG VARCHAR FOR BIT DATA`	`image`	`blob`
`LONG VARGRAPHIC`	`unitext`	`nclob`
`REAL`	`rs_udb_real`	`real`
`SMALLINT`	`smallint`	`smallint`
`TIME`	`rs_udb_time`	`time`
`TIMESTAMP(12)`	`rs_udb_timestamp12`	`timestamp`
`VARCHAR`	`varchar`	`varchar` (See note below.)
`VARCHAR FOR BIT DATA`	`rs_udb_varchar_for_bit` (up to 255 bytes) `varbinary` (greater than 255 bytes)	`varbinary`
`VARGRAPHIC`	`univarchar`	`nvarchar`

Note: If your primary database is configured for a single-byte character set (like iso_1) that accepts extended ASCII characters—the one-byte ASCII character values between 128 and 255—HANA DB may convert single-byte extended characters into double-byte characters in char or varchar columns. This conversion may subsequently cause the storage size in HANA DB to exceed the original column length or storage of the primary database. If your primary database and application support using extended ASCII characters in a single-byte character set, you may need to increase the size of the corresponding column in the HANA DB table definition. This change allows those columns to accommodate the conversion of extended characters to two-byte storage.